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Joseph F Rando, Ilya M Fishman: Temperature operated gas valve. Spectra Physics, Donald C Feix, Paul Davis, Thomas M Freiburger, August 21, 1990: US04949742 (70 worldwide citation)

A gas valve which is particularly useful in a laser gas fill system requiring repeated fillings includes a conduit positioned between high and low pressure gas regions. Within the conduit is a restriction, and this restriction is closed by a meltable solid material. When the valve is to be opened, h ...


22
Joseph F Rando, H Nick Roberts, John F O Brien: Bar code scanner with asterisk scan pattern. Spectra Physics, Donald C Feix, Paul Davis, Thomas M Freiburger, July 3, 1990: US04939356 (69 worldwide citation)

A bar code scanner which preferably generates an asterisk-like scan pattern has a scanner head at the end of a flexible mount enabling operator personnel to orient the scanner head in virtually any position and direction. The scan pattern generator is compact in size, utilizing a laser diode as a so ...


23
Joseph F Rando, Henry L Schwartz: Level/plumb indicator with tilt compensation. Spectra Physics, Donald C Feix, Paul Davis, T M Freiburger, August 1, 1989: US04852265 (68 worldwide citation)

A tool for use in establishing a precise level line or plumb line or line for alignment uses a visible laser diode for projecting the line. The tool is relatively small and compact, drives the laser diode using batteries contained in the tool, and includes tilt compensation for use on surfaces which ...


24
Thomas M Baer, Mark S Keirstead: Nd-YAG laser. Spectra Physics, Donald C Feix, Thomas M Freiburger, Paul Davis, March 24, 1987: US04653056 (67 worldwide citation)

A neodymium YAG laser is pumped by a matched laser diode of high efficiency, resulting in a compact, high-efficiency and long-lifetime laser assembly. Output is in the near infrared range, but can be converted to the visible spectrum by an internal frequency doubler. A doubling crystal, which may be ...


25
Joseph F Rando, Henry L Schwartz: Level/plumb indicator with tilt compensation. Spectra Physics, Donald C Feix, Paul Davis, T M Freiburger, April 3, 1990: US04912851 (64 worldwide citation)

A tool for use in establishing a precise level line or plumb line or line for alignment uses a visible laser diode for projecting the line. The tool is relatively small and compact, drives the laser diode using batteries contained in the tool, and includes tilt compensation for use on surfaces which ...


26
Johann Tam: Method and apparatus for drying wafers. The Silicon Valley Group, Donald C Feix, February 2, 1982: US04313266 (64 worldwide citation)

A method and apparatus for drying a wafer at a drying station includes a wafer holder which grips the wafer on its edge so that there is no contact with a face of the wafer. This eliminates contact areas which could cause stains on the face. A carriage mechanism brings a wet wafer into the drying st ...


27
Craig D Cherry: Bar code scanner laser emission reduction. Spectra Physics, Donald C Feix, Paul Davis, T M Freiburger, July 4, 1989: US04845349 (57 worldwide citation)

An optical bar code reader using a light source which can be switched on quickly and includes provision for activating the light source and related devices only when data is actually being gathered, rather than wasting a large amount of beam on time and energy as in prior software based scanners.


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James D Kafka, Thomas M Baer: Synchronously pumped dye laser using ultrashort pump pulses. Spectra Physics, Donald C Feix, Thomas M Freilburger, Paul Davis, February 24, 1987: US04646308 (54 worldwide citation)

The output of a continuous wave modelocked Nd:YAG laser is first pulse compressed and then frequency doubled from infrared to green, to provide a new pumping source for a synchronously pumped dye laser. The disclosed apparatus and methods can achieve tunable subpicosecond pulses at relatively high a ...


30
Williams G Patterson, Allen B Rochkind, Leslie A Miller, Martin P T Bradley: Dual piston pump. Spectra Physics, Donald C Feix, October 5, 1982: US04352636 (53 worldwide citation)

A pump for producing a substantially smooth and continuous outflow of liquid at relatively high pressure has two piston assemblies flow connected in series. The first piston assembly includes a pressure piston having a long suction stroke and a relatively short and abrupt expulsion stroke. A valve a ...